#1D3D99#1D3D99

#1D3D99 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.8% C 0.155 H 265.2°. Best body text is #FFFFFF at 9.63:1 contrast (WCAG AA passes).

Color values

HEX	#1D3D99
RGB	rgb(29, 61, 153)
HSL	hsl(225, 68%, 36%)
HSV	hsv(225, 81%, 60%)
CMYK	cmyk(81%, 60.1%, 0%, 40%)
CIE-LAB	lab(29.15, 23.79, -53.51)
CIE-LCH	lch(29.15, 58.56, 293.97°)
OKLab	oklab(39.81% -0.013 -0.1547)
OKLCH	oklch(39.81% 0.155 265.2)
XYZ	xyz(7.9232, 5.8977, 30.8516)
Luminance	0.0590 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3D99 #99791D

analogous

#1D7B99 #1D3D99 #3B1D99

triadic

#1D3D99 #991D3D #3D991D

tetradic

#1D3D99 #991D7B #99791D #1D993B

square

#1D3D99 #991D7B #99791D #1D993B

split-complementary

#1D3D99 #993B1D #7B991D

monochromatic

#091432 #132866 #1D3D99 #2752CC #5276DE

Accessibility & contrast

On white

9.63

#1D3D99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#1D3D99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3D99

9.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3D99	#FFFFFF	#000000	##FFFFFF
##1D3D99	1.00	9.63	2.18	9.63
#FFFFFF	9.63	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9C

Deuteranopia (green-blind)

#003F97

Tritanopia (blue-blind)

#005465

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1d3d99;
/* rgb */ color: rgb(29, 61, 153);
/* oklch */ color: oklch(39.8% 0.155 265.2);

Tailwind

colors: {
  custom: {
    50: '#6f72b8',
    500: '#1d3d99',
    950: '#000000',
  },
}

SCSS

$custom: #1d3d99;
$custom-light: #6f72b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3d99",
  "rgb": {
    "r": 29,
    "g": 61,
    "b": 153
  },
  "hsl": {
    "h": 224.516,
    "s": 68.132,
    "l": 35.686
  },
  "oklch": {
    "l": 0.39807,
    "c": 0.15521,
    "h": 265.2
  },
  "luminance": 0.05899
}

Semantic roles & 50–950 ramp

primary

#1D3D99

secondary

#C1A451

accent

#BE3DEB

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1D3D99

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →